Posterior Axio-Appendicular Muscles

Question 1

Trapezius Origin

Answer 1

1. External Occipital protuberance
2. ligamentum Nuchae
3. spinous processes of C1-T12

Question 2

Trapezius Insertion

Answer 2

1. Posterior lateral clavicle
2. Medial surface of acromion process
3. scapular spine

Question 3

Trapezius action

Answer 3

Upper: elevation, adduction, upward rotation
middle: scapular adduction
Lower: depression, adduction, upward rotation

Question 4

trapezius innervation

Answer 4

spinal accessory
CN XI

Question 5

Levator Scapulae origin

Answer 5

transverse processes of C1-C4

Question 6

levator scapulae insertion

Answer 6

superior angle of scapula
medial border of scapula (superior to spine)

Question 7

levator scapulae action

Answer 7

scapular elevation
lateral flexion of neck
downward rotatino of scapula

Question 8

levator scapulae innervation

Answer 8

dorsal scapular

Question 9

rhomboid minor origin

Answer 9

spinous process of C7 and T1

Question 10

rhomboid minor insertion

Answer 10

medial border of scapula (level of scapular spine)

Question 11

rhomboid minor action

Answer 11

1. Scapular adduction
2. downward rotation of scapula

Question 12

rhomboid minor innervation

Answer 12

dorsal scapular

Question 13

rhomboid major origin

Answer 13

spinous process of T2-T5

Question 14

Rhomboid major insertion

Answer 14

medial border of scapula (inferior to spine)

Question 15

rhomboid major action

Answer 15

1. scapular adduction
2. downward rotation of scapula

Question 16

rhomboid major innervation

Answer 16

dorsal scapular

Question 17

Deltoid origin

Answer 17

anterior: lateral clavicle
Middle: acromion process
Posterior: scapular spine

Question 18

deltoid insertion

Answer 18

deltoid tuberosity

Question 19

deltoid action

Answer 19

all parts: should abduction
Anterior: flexion, internal rotation, horizontal adduction
Posterior: extension, external rotation and horizontal abduction of shoulder

Question 20

Deltoid Innervation

Answer 20

axillary